aboutsummaryrefslogtreecommitdiff
path: root/sound
diff options
context:
space:
mode:
authorKuninori Morimoto <morimoto.kuninori@renesas.com>2009-10-30 12:02:44 +0900
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-10-30 10:35:30 +0000
commit07102f3cefc93aa742af91186830e282c0347e41 (patch)
tree417731c7492ecabed293bc82177dd6efbbb4eb9b /sound
parent9ddc9aa910687a8787dbbdc53dcd48e738b197d9 (diff)
ASoC: sh: FSI: Add capture support
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/sh/fsi.c93
1 files changed, 86 insertions, 7 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 9742a280ba1..e1a3d1a2b4c 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -447,6 +447,75 @@ static int fsi_data_push(struct fsi_priv *fsi)
return 0;
}
+static int fsi_data_pop(struct fsi_priv *fsi)
+{
+ struct snd_pcm_runtime *runtime;
+ struct snd_pcm_substream *substream = NULL;
+ int free;
+ int fifo_fill;
+ int width;
+ u8 *start;
+ int i;
+
+ if (!fsi ||
+ !fsi->substream ||
+ !fsi->substream->runtime)
+ return -EINVAL;
+
+ runtime = fsi->substream->runtime;
+
+ /* FSI FIFO has limit.
+ * So, this driver can not send periods data at a time
+ */
+ if (fsi->byte_offset >=
+ fsi->period_len * (fsi->periods + 1)) {
+
+ substream = fsi->substream;
+ fsi->periods = (fsi->periods + 1) % runtime->periods;
+
+ if (0 == fsi->periods)
+ fsi->byte_offset = 0;
+ }
+
+ /* get 1 channel data width */
+ width = frames_to_bytes(runtime, 1) / fsi->chan;
+
+ /* get free space for alsa */
+ free = (fsi->buffer_len - fsi->byte_offset) / width;
+
+ /* get recv size */
+ fifo_fill = fsi_get_fifo_residue(fsi, 0);
+
+ if (free < fifo_fill)
+ fifo_fill = free;
+
+ start = runtime->dma_area;
+ start += fsi->byte_offset;
+
+ switch (width) {
+ case 2:
+ for (i = 0; i < fifo_fill; i++)
+ *((u16 *)start + i) =
+ (u16)(fsi_reg_read(fsi, DIDT) >> 8);
+ break;
+ case 4:
+ for (i = 0; i < fifo_fill; i++)
+ *((u32 *)start + i) = fsi_reg_read(fsi, DIDT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ fsi->byte_offset += fifo_fill * width;
+
+ fsi_irq_enable(fsi, 0);
+
+ if (substream)
+ snd_pcm_period_elapsed(substream);
+
+ return 0;
+}
+
static irqreturn_t fsi_interrupt(int irq, void *data)
{
u32 status = fsi_master_read(SOFT_RST) & ~0x00000010;
@@ -460,6 +529,10 @@ static irqreturn_t fsi_interrupt(int irq, void *data)
fsi_data_push(&master->fsia);
if (int_st & INT_B_OUT)
fsi_data_push(&master->fsib);
+ if (int_st & INT_A_IN)
+ fsi_data_pop(&master->fsia);
+ if (int_st & INT_B_IN)
+ fsi_data_pop(&master->fsib);
fsi_master_write(INT_ST, 0x0000000);
@@ -612,16 +685,12 @@ static int fsi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
int ret = 0;
- /* capture not supported */
- if (!is_play)
- return -ENODEV;
-
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
fsi_stream_push(fsi, substream,
frames_to_bytes(runtime, runtime->buffer_size),
frames_to_bytes(runtime, runtime->period_size));
- ret = fsi_data_push(fsi);
+ ret = is_play ? fsi_data_push(fsi) : fsi_data_pop(fsi);
break;
case SNDRV_PCM_TRIGGER_STOP:
fsi_irq_disable(fsi, is_play);
@@ -757,7 +826,12 @@ struct snd_soc_dai fsi_soc_dai[] = {
.channels_min = 1,
.channels_max = 8,
},
- /* capture not supported */
+ .capture = {
+ .rates = FSI_RATES,
+ .formats = FSI_FMTS,
+ .channels_min = 1,
+ .channels_max = 8,
+ },
.ops = &fsi_dai_ops,
},
{
@@ -769,7 +843,12 @@ struct snd_soc_dai fsi_soc_dai[] = {
.channels_min = 1,
.channels_max = 8,
},
- /* capture not supported */
+ .capture = {
+ .rates = FSI_RATES,
+ .formats = FSI_FMTS,
+ .channels_min = 1,
+ .channels_max = 8,
+ },
.ops = &fsi_dai_ops,
},
};